Report for 30356

Name

BCBSM - Blue Cross Blue Shield of Michigan Mutual Insurance, US

AS Adjacency Report

In the context of this report "Upstream" indicates that there is an adjacent AS that lines between the BGP table collection point (in this case at AS2.0) and the specified AS. Similarly, "Downstream" refers to an adjacent AS that lies beyond the specified AS. This upstream / downstream categorisation is strictly a description relative topology, and should not be confused with provider / customer / peer inter-AS relationships.

30356 BCBSM - Blue Cross Blue Shield of Michigan Mutual Insurance, US

  Adjacency:     2  Upstream:     2  Downstream:     0
  Upstream Adjacent AS list
    AS7018          ATT-INTERNET4 - AT&T Enterprises, LLC, US
    AS3356          LEVEL3 - Level 3 Parent, LLC, US

Announced Prefixes

Rank  AS       Type    Originate Addr Space  (pfx)   Transit Addr space  (pfx)  Description
2322  AS30356        ORIGIN  Originate:     100096 /15.39  Transit:          0 /0.00  BCBSM - Blue Cross Blue Shield of Michigan Mutual Insurance, US

Aggregation Suggestions

        Filter: Aggregates, Specifics

This report does not take into account conditions local to each origin AS in terms of policy or traffic engineering requirements, so this is an approximate guideline as to aggregation possibilities.

 Rank AS            AS Name                                      Current  Wthdw  Aggte  Annce Redctn       %
38748 AS30356       BCBSM - Blue Cross Blue Shield of Michigan Mu      9      0      0      9      0   0.00%


  Prefix               AS Path                              Aggregation Suggestion
  12.107.172.0/24      4777 2516 3356 30356   
  12.176.249.0/24      4777 2516 3356 30356   
  12.231.98.0/24       4777 2497 7018 30356   
  167.242.0.0/16       4777 2516 3356 30356   
  167.242.45.0/24      4777 2497 7018 30356   
  167.242.46.0/24      4777 2497 7018 30356   
  167.242.123.0/24     4777 2497 7018 30356   
  167.242.124.0/24     4777 2497 7018 30356   
  167.242.128.0/17     4777 2497 7018 30356   

Advertisements that are fragments of the original RIR allocation (more specifics) originated by this AS.

AS30356   8 More Specifics   9 Total Advertisements   BCBSM - Blue Cross Blue Shield of Michigan Mutual Insurance, US
    12.107.172.0/24               12.0.0.0/8
    12.176.249.0/24               12.0.0.0/8
    12.231.98.0/24                12.0.0.0/8
    167.242.45.0/24               167.242.0.0/16
    167.242.46.0/24               167.242.0.0/16
    167.242.123.0/24              167.242.0.0/16
    167.242.124.0/24              167.242.0.0/16
    167.242.128.0/17              167.242.0.0/16

Whois Entry

whois: 402613

IANA has recorded AS30356 as originally allocated by 
/usr/bin/whois -h jwhois.apnic.netr "AS30356\n             
             #
             # ARIN WHOIS data and services are subject to the Terms of Use
             # available at: https://www.arin.net/resources/registry/whois/tou/
             #
             # If you see inaccuracies in the results, please report at
             # https://www.arin.net/resources/registry/whois/inaccuracy_reporting/
             #
             # Copyright 1997-2026, American Registry for Internet Numbers, Ltd.
             #
             
             
             ASNumber:       30356
             ASName:         BCBSM
             ASHandle:       AS30356
             RegDate:        2017-11-06
             Updated:        2017-11-06
             Ref:            https://rdap.arin.net/registry/autnum/30356
             
             
             OrgName:        Blue Cross Blue Shield of Michigan Mutual Insurance
             OrgId:          BCBSMMI-1
             Address:        600 East Lafayette
             City:           Detroit
             StateProv:      MI
             PostalCode:     48226
             Country:        US
             RegDate:        2017-07-20
             Updated:        2017-07-20
             Ref:            https://rdap.arin.net/registry/entity/BCBSMMI-1
             
             
             OrgTechHandle: NAVAR2-ARIN
             OrgTechName:   Navaraj, Paul 
             OrgTechPhone:  +1-313-225-9448 
             OrgTechEmail:  PNavaraj@bcbsm.com
             OrgTechRef:    https://rdap.arin.net/registry/entity/NAVAR2-ARIN
             
             OrgNOCHandle: ZISKI-ARIN
             OrgNOCName:   Ziskie, Kevin 
             OrgNOCPhone:  +1-313-225-6577 
             OrgNOCEmail:  WRied@bcbsm.com
             OrgNOCRef:    https://rdap.arin.net/registry/entity/ZISKI-ARIN
             
             OrgAbuseHandle: ZISKI-ARIN
             OrgAbuseName:   Ziskie, Kevin 
             OrgAbusePhone:  +1-313-225-6577 
             OrgAbuseEmail:  WRied@bcbsm.com
             OrgAbuseRef:    https://rdap.arin.net/registry/entity/ZISKI-ARIN
             
             
             #
             # ARIN WHOIS data and services are subject to the Terms of Use
             # available at: https://www.arin.net/resources/registry/whois/tou/
             #
             # If you see inaccuracies in the results, please report at
             # https://www.arin.net/resources/registry/whois/inaccuracy_reporting/
             #
             # Copyright 1997-2026, American Registry for Internet Numbers, Ltd.
             #